Course and log recorder.



PATENTED MAY 5, 1908 T. M. Poo'r.

COURSE AND LOG RECORDER.

APPLICATION FILED AUGll, 1906.

10 SHEETS-SHEET 1.

WITNESS'ES fill SSWW NWN NEESES INVENTOR y T. M. EOOTE. OOORsE AND EOErRECORDER.

APPLICATION 'FILED AUG. 11, 1906.

PATENTED MAY 5, 1908.

10 SHEETS-SHEET 2.

4%TORNSM No. 886,788. PATENTED MAY 5, 1908.

T. M. POOTE.

COURSE AND LOG RECORDER.

' p T1011 FILED AUG. 11 1 o I AP LIM" 9 6 1o sHEETssHB1:T s.

y MQATTOR Ys No. 886,788.'l y PATENTED MAY 5, 1908.

T. M. PoOTE.

COURSE AND `LOGr RECORDER.

APPLICATION FILBD MIG. @1. 190e.-

10 SHEETS-SHEET 4.

WITNESSES: j `INVENTOR f BY b b//Qmw M l Y Ah ATT RNEYs No. 886 78s.RATRNTRD MAY 5 1908. T. M. PooTR.

COURSE AND LOG RECORDER.

APPLICATION FILED AUG. 11, 1906.

1o 'SHEETS-SHEET s.

No. 886,788.v v PATENTED MAY 5, 1908.

T. M. POOTE.

COURSE AND LOE RECORDER.

APPLICATION FILED AUG.11, 1906.

WITNEssEs: ?0 jr n 0R 886 78s. y y PATBNTBD MAY 5'1908.

l T. M. FOOTB.

`COURSE AND LOG RECORDER.

APPLICATION FILED AUG.11, 1906. lo SHEBTS. SHEBT 7.

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I a l l l N 1 O #i 1 )l E ii 4f i i I Il ESSESI 4J. zo

INVENTOR OY f s; a ATTORNEYS No. 888,788. f l PATBNTBD MAY 5, 1908. T.M. FOUTE. Y R

` COURSE AND LOG RECORDER.

ArPLroATIoN FILED AUG. 11, 1908.

10 SHEBTS-SHERT 8,

yfaz-f v N 8801788. PA E TED MM5 1908.

o E T. M. P00038. T N

COURSE AND LOG RECORDER.

APPLICATION FILED AUG.11. 1906.

10 SHEETS-SHEET 0.

WITN ESSES: j! @WLM I, 1 D B 'ATTO EY5' No. 886,788.` PATENTED MAY 5,1908.

T. M. FOOTB. l

COURSE AND LOG RECORDER.

N APPLIOATIO FILED AUG ill, 1906 10 SHEETS SHBBT lo.

ffy/Ji /f wlTNfssEs INVENTOR 4M I i JMW/,fafa

AT ORNEYS recorder, and com sTAgrEs THEODRE M. FOOTE, OF A'LLSTON,MASSACHUSETTS.

'PATENT OFFICE.

co'UnsE AND Loc ma'conmzn.

No. estense.

`State of Massachusetts, have invented a certain new and useful Courseand Log Recorder, of which ,the following is a specification, referencebeing had to the accompanying drawms, forming a part thereof.

ly invention relates to a course and log rises means adapted to becarried by a vesse for recording particulars in connection therewith astol direction, distance, speed and time.

The objects of my invention are iirst to accurately plot the course of avessel for any desired period, second, to record the direction in whichthe vessel is heading when the same 1s at anchor or tied up to a wharf,third, to

record intervals of time, which record may be read with vthe directionrecord whereby the direction in which the vessel was heading at anyparticular time may be quickly ascertained, fourth, to record umts ofdistance,

which record may be read with the time and.

direction records whereby the distance traveled and hence location ofthe vessel at any time and the direction in which the same was headingwhen in the location indicated by the chart, may be readily computed.

For the purpose of recording the ships course, and the direction thereofat all times,

I employ means controlled by the compass needle for recording thedirection vindicated by the compass needle itself, and in thisconnection I have provided a novel circuit making and breakingr devicecontrolled by a compass in such a manner as to interfere with the tafter suitable intervals, the compass needle.

movement. thereof to the least possible eX- tent, for it will berealized that mechanism which would appreciably o ose free movement ofthe compass wouldjhe useless, as it would interfere with the accuracythereof. This portion of my invention comprises a member adapted 'to bemoved toward and away from the horizontal plane in which the compassneedle, or a part carried thereby, moves", so as to contact lightly.with the needle or the said part for a short period being entirely freeto move during said intervals. ihe needle or the said. part controls anelectric circuit or electric circuits, which control l may employ forvarious inuposcsl may Specification of Letters Patent. 'Application ledAugust 11, 1906. Serial No. 380,110.

The contact of this member with A Patented may 5, 1 908.

be desired. By reason of the fact that the member moves into contactwith the compass needle at substantially right angles to its plane ofmovements, itwill have no tendency to thereby give the needle an impulseto move in either one direction or thev other, and, although thiscontact will momentarily hold the needle against free movement, theneedle will be free to move during the inter-v vals of time between suchcontact, and hence any. slight inaccuracy of the needle during suchperiods of contact will be immediately corrected when contact ceases.

In the form of apparatus illustrated herein, I Ahave em loyed two mainelectric circuits controlled g of one or other of these circuits tendingto move a recording device in one direction or the other. Theaforesaid-circuit controlled 'member is mounted to rotate concentricallywith the com ass needle, and is connected to move sync ronouslyr withthe recording device, andthe direction in which the said circuitcontrolled member is arranged. to move, upon the closing of one or other.of the said circuits, is in a direction following the. direction ofmovementkof the compass needle. Thus the said member tends to constantlymove to, and maintain itself in, a neutral position with respect to thesaid needle,` and the recording device mo 0f synchronously therewith, asstated, w constantly record the position of the needle. The record isconveniently made upon a constantly moving strip of paper, to which A ythe compass needle, the closing continuous feeding movements are given,

regardless as to whether the vessel is moving forward at the time ornot. A continuous line will thus be traced by the recording device,which will indicate the successive directions of the compass needle,-and hence the successive directions in which the ship heads.

For the purpose of recording intervals of time and distance I p rovidetime mechanism and counting mec ianism, together with printing means forprinting the intervals of time and distance registered thereby. The

printing mechanism is arranged to operate 'at predetermined intervals oftime, and a succession of time and distance records will thus be printedsuccessively upon the record sheet, and these records will be caused toaippear at points thereon corresponding with t e points at which thecourse chart is being recorded at the moment. ThrI relation of 7, theplane of section being substantiallyV the time and distance intervalswill give the In the drawings: Figure 1 isa front view ofthe completeinstrument and its case, withone of the doors thereof o en disclosingcertain of the mechanism at t e interior thereof and a portion of arecord strip upon which a record is being made. Fig. 2 is a front viewof the interior mechanism of the instrument with the case in verticaltransverse section. Fig. 3 is a view in side elevation 'of the interiormechanismwith the casing in verticallongitudinal section, the plane ofsection thereof being at right angles tothe plane of section of Fig. 2.Fig. 4 is a top view of the interior mechanism with the casing inhorizontal section, the plane of section being taken substantially uponthe line 4, 4 of Fig. 2. Fig. 5 is a view ol the interior mechanismremoved from the casing, the said view being in horizontal sectionsubstantially upon the plane of the line 5, 5 of Fig. 2. Fig. 6 is aview inhorizontal section through the entire machine substantially uponthe plane of the line 6, 6 of Fig. 2, the front part 'of the casingbeing broken away. Fig. 7 is a view in horizontal section substantiallyupon the plane of the line 7, 7 of Fig. 2, of mechanism with the casingremoved. Fig. S is a detail view in vertical section through the partshown in Fig.

upon the line S, 8 of Fig. 7. Fig. 9 is a view .in vertical longitudinalsection Athrough the upper part of the machine, with thecasing Yremoved. Fig.` 10 is a detail sectional view of magnetic clutchmechanism employed.

Fig. 1-1 is a viewin central vertical transverse section through theparts shown in Fig. 10.

. Fig. 12 is a-view in side elevation of certain 'controlling meansemployed for the time and distance recording devices.

Fig. 13 is a detail view of a one-revolution clutch employed inconnection therewith. Fig. 14 is aview in side elevation o f the relayfor controlling the printing o rrecording of the time' and distance, andis to-be read in connection with the parts shown in Fig. 12. Fig. 15' isa view in central vertical section of the relays employed in con#nection with the main circuit c osing means.

Fig. 16is a partial top view of a circuit make ing and breaking devicecontrolled by' the compass, but .of a forni slightly' different. tothat; shown in the other figures; Fig. 17 is a detail sectionalelevation of the contact oints and parts supporting them comprised inthe modification illustrated in Fig. 16. Fig'. 18 is a diagrammatic viewillustrating conventionally the electric circuits of the machine.

The machine as a whole com rises a casin 20 havingsuitable openings andoors whereby access may be readily had to the interior thereof, theinterior part being dividedA substantially into three compartments, anupper compartment 21, an intermediate compartment 22, and a lowercompartment 23. The upper compartment 21 contains the compass and thecircuit making and breaking means artially comprised in, and controlledtherev. The intermediate compartment 22 contains vthe motor for drivingthe entire' mechanism, and various electrical mechanism such as selectinrelays and magnetic clutches, together wit means for controlling I thetime and distance recording devices. The lower` compartment 23 containsprincipall; the means for driving the record sheet.

. T excompass device com rises 'a compass needle 2 4 mounted, as usua uon a central bearing point 25, whereby it isl ree to rotate in ahorizontal plane, and hence under the influence of magneticY attractionto constantly point toward the north. The central` bearing point 25'ismounted in a cylindrical casing 26, the said casing being pivoted bymeans of horizontal pivots 27 to-a gimbal rin 28, which is, in turn,pivoted by means of orizontal pivots 29 to'supports 30, the said pivots29 and 27 being disposed 90degrees from each other, in the usual mannerin imba'l connections, so that the casin 26 is ree to swing in everydirection, where y the compass needle may be maintained in a truehorizontal psitionregardle'ss of the motion of the ship, all as in amanner well known and understood in connection with shi s compasses. Aweight 31 is dis osed within the casing'26 at some distance low theivotal points of support therefor, so as to bring the center of gravitythereof well below the said points of su port.

Instead o securin astationary part of t e device, as is usu in shi scompasses, inthe resent instance the sai supports are secure uponaplatform32, which is arranged to rotate about a center concentric withthe bearingpoint 25.- This platform rests upon anti-friction Wheels 33)ournaled in a stationary su port 34, ,and is guided centrally by meanso a flange` 35 secured fast to the part 34.` The part Bgiis ser, curedfast to a shelf 3.6, which is 'a portion of the supports l n the maincasing 20, above referred/to, and

rotated. Rotation of the-platform y13u compass supporting casing 26,4aswill be well understood.

The compass supporting casing carries an insulating ring 38, upon whichis supported three contact strips 39, 40 and 41. These vcontact stripsare in the form of two concentric rin s, the inner ring being continuousand designated by the'ference character 3 9, and the outer ring beingformed in two segments designated respectively by the referencecharacters 40 and 41. The said insulatin ring 38 has depending posts 42,which are tted in orifices in a metallic ring 43 secured fast to thecylindrical casing 26 by means of arms-44. The engagement of the posts42 with the orifices in the metallic ring -43 serves' as a guide toprevent relativeretary'movement between the insulatin ring 38-and ,thecasing, but permits limite vertical movement between the two said parts.Springs45 are arranged around the posts-43 between shoulders orabutments thereon,

andthe under side of the ring 43, wherebythere is' a constant tendencyfor the two said rings 38 and 43 to come together, and upward movement-of the ring 38 is resisted.

The lower ends of the posts 42 rest upon arms 46 which projectdivergently upward from a ring 47 to which they are secured. The ring 47is secured to the casing 26 by a gimbal connection comprising horizontalpivots, and an intermediategimbalring 48, whereby the said ring 47 isfree to move with respect to the cas' 26 in the usual manner permittedby gimba joints, but is com elled to partake of its rotative movement,vounted immediately beneath the casing 2,6and concentrically with thebearing point 25, is a short shaft 49. This shaft is mounted upon thecasing 26 and moves with it, partaking of all its movements,'but having,in addition thereto provision for independent revolution, that is tosay,.the' shaft 49 may revolve freely with respect to the casing 26. Theshaft 49 carries four arms 50, at theends of which are antifrictionrollers 51. The anti-friction rollers 51 are of different sizes, two ofthe opposite rollers, as appearing in Fig. 9, be respectively, of reatively large and smallldiameter, and the intermediate vrollers beingeach of a diameter between the diameters of 'the two rollers as apearing in Fig. 9. These antifrictin rolliers engage the underside ofthe ring 47, 'and because of their different diameters tip it to aposition obli ue with res "ct to the compass casing26". qWhen the s aft49 is rotated the said ring will be tipped progr'essively all around itscircumference, this movement corresponding to the movementsv of thesolar system known as movements of nutation, and, in order to simplifythe description herein, I will hereafter refer to 'the movement of thismember, and to corresponding movements of other parts controlledthereby, as movements of nutation. The movement of nutatiori' thusimparted to the. ring 47-will be transmitted through the arms 46 tothe'posts 42, and thence to the insulating, ring 39, so that, at eachrevolution of the shaft 39, a complete movement of nutation will beimparted to the insulating ring y38- With respect to the casing 26carryin it.

glhe compass needle 24 is provided with an arm 52, which carries acontact member 53.

" The contact member 53 is preferably pivoted to the arm 52, and isadapted to rest lightly upon the contact strips 39 and 40 or 39 and 41.The member 53 is insulated from the said' arm 52, and forms merely abridge or cross-over by which the circular contact strip e 39 iselectrically connected with either of the outer segments 40 or 41. Undernormal conditions, however, the contact member 53'is suspended above thecontact Qstrips, freely clearing them, so asin no wise to impede'thehorizontal movement of r'otatioiiof the comass needle. In its movement4of nutation, iiowever, the insulating strip 39 will be periodicallylifted at a oint beneath the contact member 53, where y the said contactmember Will be engaged by the contact strip, so

V-that contact Will be intermittently or periodically 'made for a shortinterval, with longer intervening intervals during which thencedle isentirely free to move. noted that, by reason l,of the fact that the Itwill also'be movement of the ring 38 is at substantially right angles tothe horizontal plane of movement of the compass needle and part 53carried thereby, the impact of the engagement just described between thecontact member 53 and the contact strips will have no tendency to impartswinging movements to the needle in either one direction or the other.

' The shaft 49 is connected by universal joints 54 and a telescopicconnecting member 55 with a vertical shaft 56, which is driven throughsuitable gearingby a continuouslyrotating motor 57 This form of shaftconnection will maintain the shaft 56 in constant driving relation withthe shaft 49 without in any way interfering with the freedom of theswinging movements which it derives from the casing 26 upon which it isjournaled. The connecting gearing here shown comprises a pinion 58 uponthe motor shaft 217, which is in mesh with a spur gear 59 upon anintermediate shaft 60. The intermediate shaft 60 carries a worm 61,which engagesa worm wheel 62 pon the said vertical shaft y56. The motor57 may be of any form, but is.

preferably, and as here shown, an electric motor, which may receiveitscurrent from an suitable source of supply. In Fi 18, I ave shown themotor diametrical y as connected by means of Wires 102, 103, with mainline Wires 100, 101, which lead from ,a

. source of current supply, not shown. Resistance 104 is preferablyincluded in one f thel sistanee through a circuit closing device 64,

should the speed of the motor drop below a predetermined point. motormay be caused to rotate at a practi-` cally uniform rate of speed.

The motor 57 also furnishes the power for rotating the platform 32 andparts carried thereby, but the transmission from said motor to saidplatform is through a magnetic clutch mechanism which l will nowdescribe.

The magnetic clutch appears in several of the drawings, but Vshows moreclearly in Fig.

6 and detail Figs. 10 and 11. It comprises a shaft 65, which is mountedto rotate freely in suitable bearings, and is lprovided about midwaywith a disk 66, which constitutes an armature for two sets ofelectro-magnets. These sets of electro-magnets, which are designatedrespectively by the reference characters 67 and 68, are secured togear-wheels 69 and 70, said gear-wheels mounted to rotate loosely uponthe said shaft 65. The gear-wheel 69 is arranged in mesh with a pinion71, upon the said intermediate shaft 60, while the gear-wheel 70 isarranged in mesh with an idler gear 72, which is in turn in mesh with apinion V73 upon the shaft 60. Thusthe two gear-wheels 69 and 70 aredriven constantly from the'motor through 'the intermediate shaft 60, butin opposite directions. lf either of the sets of magnets 67, 68, isenergized, the disk armature 66 will be attracted thereby, and the shaft65 will be caused to rotate in a direction lin which the energized setof eleotro-magnets- .is revolving. By energizing either one set or theother ofthe electro-magnets 67 or 68, it will be seen, then, 'thattheshaft 65 may be caused to rotate in either direction, as desired. Theshaft 65 is provided at oneend with a bevel pinion 74, which is arranged-in mesh with a complementary bevel pinion 75. The latter is arrangedfast upon a short vertical shaft 76 arranged to rotate? in fixedbearings suitably supported, the said vertical shaft 76 connected bymeans of universal joints 77 and an oblique connecting member 78 withanother vertical shaft 79 journaled in bear-v ings 80 nearthe upper endof the machine.

The shaft 79 is provided with a bevel gearv 81, arranged in m'esh with abevel pinion 82, mounted upon a'horizontal shaft 83, which is inturnprovided with a worm 84, engaging the peripheral teeth 37 of theplatform 32. Rotation, then, ofthe magnetic clutch shaft 65 in eitherone direction or the other results in rotation in a correspondingdirection of the platform -32 and parts carried thereby.' In order totransmit-current to the coils of the By this means the.

electro-magnets 67, 68, I have provided each of the gear-wheels 69, 70,with an insulated member 85, 86, each of which carries contact stripssuitably connected with the said coils. Stationary brushes 87, 88,mounted upon suitable insulating blocks, engage the said strips. One ofthe said brushes of each ofthe set of coils connect through wires 106and 107 with the contact points of selecting re-v lays 89, 90, while theother brushes connect to a common return strip 99, from which a wire 109leads to oneof the main line wires The selecting relays appear inseveral of the figures, but are shown more clearly in Figsr 6 and 15.The said relays comprise electro-magnetic coils 91, 92, pivotedarmatures 93, 94, contact points 95, 96, to which the wires 106 and 107are connected, and a common back-sto 97. The armatures are normallyattracte toward the back-stop by means of a spring 98 secured to both ofthem, which spring not only forms a means for drawing the said armsrearwardly, but also an electrical conductor to electrically connect thesaid armatures together. The backstop is connected by meansV of a wire108 to the line wire 101. electrically connected by wires 110 and 111(see diagrammatic Fig. 18) with the contact segments 40 and 41, whilethe common return for the said coils connects with the main line `wire,100. The circular contact strip 39 is connected bymeans of a wire 112with the main line wire 101. In the actual machine the wires 110, 1114and 112 do not connectdirectly with the contact strips 39, 40 and 41,as shown in the diagrammatic Fig. 18, but with three brushes'120, whichare mounted upon an insulating block '121 secured to the shelf 36, saidbrushes arranged in contact with three metallic rings 122, 123, 124,mountedupon, but insulated from, the supports 30 carried by 'theplatform 32. These rings are, in turn, connected by means The coils 87and 88 are of flexible wires 125 to the strips 39, -40 and tion ofthelatter ring with respect to the said rings 122, 123, 124, is compensatedfor by the flexibility of the-Wires125- Returning now to .the dri fmechanism,

it will b e seen that the interme 'ate shaft 60 is provided at its outerend with a worm 126,.

which engages the teeth of .a worm wheel 127 mounted upon the up er endof an blique i shaft-128. Said' sh t 128 penetrates the platform) 129uponwhich vthe magnetic clutch, selecting relays, and other mechanismcontained within the` chamber 22, are.

supported, and which'serves to divide the intermediate chamber 22.andlower chamber 23 fromeach other; and, at its lower en'd, is-

provided with a Worin 130 which engages the saenss l cured to theplatform 129, over a guide roller 139 near the upper end of thecompartment 22, d-own around and beneath the drive roller 133, thence toa take-up roller 140, which is loosely supported upon drive rollers-141, the trunnions or shaft of the said roller 140 being guided betweenthe standards 142.

I AThe drive rollers 14'1 are driven from the drive shaft 132 by meansof a gear-wheel 143 thereon, an idler gear 144, a gear-wheel, 145secured to rotate with one of the said drive rollers 141, another idlergear 146 and a gearwheel 147 upon the'other' of the said drive rollers141. lThe drive roller 133 times the movement of the web or recordsheet, while the loose friction drive of the take-up roller 140 isarranged to drive the take-up roller 140 at a speed slightly in excessof the speed of movement of the web, the excess of movement beingcompensated for Vby a slight sli pingywhereby the web rolled up uon.th)e roller 140 will always, be firm an tight. Springpressed-friction lingers 148 are preferably employed to cause the` webto hug closely to the main drive roller 133 so as to prevent any.slippage taking place between the sheet and this roller.

The direction roller 139, which, as has been called attention to, isarranged near the u per end of the compartment 22, is just at t ie rearof, andin close proximity to, a disk 149'. This disk 149 carries.recordingingers 150, which may include pencils, pens or other devicesfor producing marks upon the said record sheet, and are so arranged withrespect to n the said record sheet that one or other ofthe said fingerswill be in engagement with the front of said record sheet, forallpositions of the disk, a platen 151 being provided at the rear ofthesheet to form a backing -therefor at the point at which the recordingoints of said fingers engage-same. The dis 149 is mounted to rotate uvon a stationary stud 152, and a gear-wheel)153isv secured to the saiddisk so that it will rotate therewith.

This gear-wheel isarranged in mesh with a worm 154 upon the verticalshaft 79, so that, whenever the compass casing 26 is caused to rotate,the said disk will necessarily rotate synchronously therewith.

The relationship of the gearing between the disk 149 and the rotatingplatform 32,

.which carries-the compass casing 26, is as one isto four, so that everytime the platform 32 and compass casing carried therebV performs onecomplete revolution, the dis 149 will Imove through one quarter of arevolution.

The disk, however, being lprovided with four recording fingers,provision is made whereby one recording fin er will come into actionupon one side of the said record sheet at the moment another recordingfinger leaves it upon the other side, so that a recording inger'willalways be in engagement with the record sheet for every position of thesaid disk 149. A cam piece 216 is arrangednear one edge of the sheet andin the path of movementof that part of the fingers 1'50 carrying therecording" points, whereby the `said fingers will be lifted as they passlthe edge of the sheet, so as to lift them onto the sheet andto A.causethem to engage the same at vthe pro er point. x

e web constituting the, record sheet may be conveniently divided up intoeight longitudinal strips by ruled lines, each stri being again dividedlongitudinally into veig it subdivisions. -A stri of this description isshown as mounte in the machine in Fig. 1,

vand in the said sheet the central line is 1ntended to correspond to thepoint N of the compass, while t the point S. Both outer lines Wilcorrespond to the point S because the record sheet asa lwhole may beconsidered as corresponding to: the develo ment of a cylinder cut alongthe line S. he intermediate lines betweenS and N oneither side willrepresent SW, W, andv NW on one side of the central line N, and N E, Eand SE on the other. The

e outer lines corres ond to sub-divisions between these lines will, of

course, represent the other well known subdivisionsof the com ass.

` In Fig. 1, one of t e recording fingers 150 is shown as in registerwith. the line N, and it will be readily understood that, if the disk149 is caused to revolve with the compass for,

say, a com lete revolution, the said ingker l will gradua y move over tothe ed e of sheet so as to re ister with the line on one side or other othe central line, and, at the moment the said finger re isterswwith theline S upon one side, another nger will have come into play and will bein register withV the linehS upon the other side ofthe central line,so'that, on a continuation of the movement of the disky to complete themovement corresponding to a revolution of the compass,

the new said-linger will continue a movement alongthe record sheet untilit has arrived in register with the central'line N to take'the place ofthe finger which has passed on.l During all this time', however, thesheet Willr have been traveling lengthwise, Vfor it will be rememberedthat the' sheetfis moved slowly at lall'times by the motor, so that, al-

though the er 150 will be once more in register with t e central line N,lit will be resting u'pon the record sheet at a point 'in advance ofwhere it iirst rested, the distance and the circular strip 39. *l

closed at all there will'be no current through.

between the two points representing the time elapsed between thecommencement and the completion of the turning movement. In the drawingFig. 1 1 have shown a line which corres onds to the turning movementabove descri ed, and it will be seen that not only has the completeturning movement been recorded, but it also appears that, in turning,the movementwas from N to E to S to W and back to N, and not in theopposite direction.

To understand how the movements of the parts are brought about tocorrespond with the movements of the compass needle, 1 will now explainthe general operation of the device with particular reference to thediagrammatic Fig. 18. It must be first borne in mind that the motor 57is intended to be run continuously, and that thereby there will be acontinuous rotary movement of the central shaft 49, and hence a constantmovement of nutation, as above described, transmitted to the insulatingring 38, whereby there will be a continuous operation of the circuitmaking and breaking device com rised .in thecon# tact member carried byt e compass needle and the contact strips carried by the said insulatingring 38. There will alsobe a continuous feeding movement of the recordstrip, and a continuous movement in opposite directions of the magneticcoils 67 and 68 of the' magnetic clutch. As in a normal condition thereis no circuit through the magnetic clutch, the normal condition of thearmature disk and shaft upon which it is mounted will be a stationaryone, and hence there will be no movement @normally transmitted through,the oblique connecting shaft 78, Aand thus no movement of either thedisk 149 or the platform 32 which carries the compass casing and otherparts.

Assuming now that the contact member 53 carried by the compass needle,andfhence the compass'needle itself, is directly over a point 155 u onthe insulating ring', which point is a Apoint etween the ends of thesegmental contact strips 40, 41, and which point may hence be termed aneutral point,`it will follow that either no circuit at all will'becompleted when the insulating ring in its movement of nutation rises soas to cause the inner contact ring 39 to be engaged by the contactmember 53, or two circuits will be closed, one-between 'the segmentalstrip 40 .and the circular strip 39, and the other etween the segmentalstrip 41 If no circuit is the selecting relays, andh'ence no currentthrough the magnetic clutch, and no operation of the mechanism. 1f bothcircuits are completed, both sets of coils 91 and 92 of the selectingrelays willbe energized, and both armatures 93 and 94 attracted. Thecircuits for the coils may be traced as follows: for

the circular contact strip the coil 91, from the line wire 101 ,Ythrough the connecting wire 112 to the circular contact ring 39, throughthe contact member 53 tothe segmental contact strip 40, through the'wire 110 to the coils 91, and through a r A similar circuit for thecoils 92 may be tracedv common return'back to the line wire 100.

from the line wire 101 through the connecting wire 112 to a circularcontact ring 39, through the contact member 53 to the segmental contactstrip 41, through the wire 1 11 to the coils 92, and back through thecommon return to line wire 100. The energiza.- tion of both selectingrelays 87, 88, causing, as it does, the attraction of both the armatures93, 94, to their contact'points 95, 96,

respectively, prevents the establishment of any circuit through to thecoils 67, 68 of the -magnetic clutch, because both of the said armaturesin such position will be away from the back-stop 97, and, as willpresently be made clear, it' is absolutely necessary that one of thesaid armatures be against thebackstop in order that circuit may-be com)leted through any part-ofthe said magnetic c utch. Thus it will be seenthat, so long as that part of the circuit making and breaking devicecomprising the insulating ring 38 and springs carried thereby, is in aneutral position with respect to the other member ofthe circuit ,makingand breaking device comprising the contact member 53 carried by thecompass needle, there will be no tendency for one'of the said contactmembers to rotate with respect to the other.,v When, however, thecompass needle moves to the right or left, operation of the circuitclosing means immediately produces movements of the parts tending toagain bring the insulating ring and all parts connected directly orindirectly therewith to a point neutral with respect to the needle, so

that all tlieparts may be said to have a tendency to follow themovements of the needle,

and will so follow the needle in all its movel ments in eitherdirection.

Assuming now that the needle moves over to the right, it will then Vhavecarried the contact member 53 over the segmental strip 41. Vhenthe'insulating ring 38, in its movement of nutation, lifts the contactstrips to cause them to engage the contact member 53 carried by theneedle, circuit will be closed between the segmental contact stri 41 and39. 'Fhis will establish a circuit from line Wire 101, throughconnecting wire 112 to circular strip 39,

thence through contact memberv 53 to segmental strip 41, throughconnecting wire-111 tothe coils of the selecting relay88, thence throughthe common return of the selecting relays to the other line wire 100.The coils 92 of the selecting relay 88 will now -be energized, and thearmature 94 will be attracted so as to complete circuit through the saidarmature and the contact point 96. A cirl cuit will now-be establishedIthrough the magnetic clutch as selected -by relay 88 as follows:

Commencing with the line wire 101, circuitY may be traced through theWire 108 to the back-stop'97, from the back stop 97 current will passthrough the armature 93 of the relay 87, the said armature at this timeresting against the said back-stop, current will then pass from thearmature 93 to the armature 94, through the spring 98, thence throughthecontact point 96 andwire 107' ing member 78 to, the vertical shaft79.

Rotation of this shaft, as above specifically described, will result ina rotative movement of the platform 32 and compass casing carriedthereby, and a corresponding rotative movement of the disk 149. Theseparts will move for as long a time as the contact mem- -are so arrangedanddesigned ber 53 is closing circuit through the contact strips, butimmediately circuit is broken at this point, all movement of the saidparts will cease, because dener ation will take place (first) throughthe se ectinrelay, and the secondary circuit ythrough t clutch willinmediately thereafter be broken at the point 96. This will denergizethe magnetic clutch coils and the magnetic clutch shaft 65 willimmediately come to rest. The gearing and the in etic clutch :gt theforemoyements will be in Ldirection to upwith 'the rior movemntp thecompass needle, andp if suiicient movement 1s not imparted thereto forthe short time contact is maintained between the contact member 5 3 andthe contact strips carried 1 and time intervals: This means theinsulating'ringthen a continuation b of' such movements wilbereifectedat the -each movement of -nutationof the ring other.

. was given to the parts, or theneedle were to next closing ofcircuitfwhichwill takeplace at each revolution of the shaft 49, andhence 3S. When sufficient movement. has been given to the parts to c usethe compass'casing'to catch up Witlfthe'compass needle, no more movementwill be imparted thereto until the n'eedle 'ain moves 1n one directionor the f by chance an excess of movement move in an op osite direction,then circuit would be closed) at the next operation ofthe circuitclcserthrough the contact strip 40, with the' result tht the Select' relay 87would be energized, `the coil 67 o themag'- netic clutch wouldbe'causedto operate, and

magnetic an o posite direction to catch 11p-withl the 65 need e in suchdirection.

Bearing in mind that every movement of the compass casing is accuratelyrecorded n the chart, by reason of the fact that the disk and.record1ngpoints are traveling trans-2,70

1s a tendency for. the parts to-move backwards and forwards even thoughthe shi is holding a comparatively true course, so t at, on the actualrecord, a zigzag line will usually appear, having, however, the generaldirection ofthe course indicated. This is due to several causes: In thefirst place, the small est vibration of the needle tends to cause cir- Icuit to he closed upon one side or the other.

When circuit is so closed upon one side theparts will be moved for anappreciable distance inthe op osite direction. The next time circuit -isc osed, it Will be closed upon the other side of the center of theneutral point, and hence the parts will move back again a distance justsufficient to again pass said neutral point. When the ship turns in itscourse, however, the line plotte( will be a true one, and not a zigzagline, because the parts will continue to turn in the same directionuntil ythe turning movement is com'- pleted. In Fig. 1 the chart thereinindicated accurately re resents a chart under varying conditions.v ezigzag portion of the line referred to appearsat y y, changes of courseappear at z z, while :z: represents a complete turn around.

. Twill now take up the means for recording 110 comprises s counter 156,a time stam 157,l

and actua mechanism by whic the counter and time stamp are caused toprint an impression or record upon, the record sheet. The time stamp 157may be of any well known ordinary mechanism such as is on the marketto-day, comprising iripression l wheels to which'a step by step movementis. im b electro-magnetic means under the contro of\suitable circuitvcontrolling mechanism. Theim'guit cotrolling\mech 'anismmayconvenienti-p comprise a clock y train of vgearing 158 arraifed to closecircuit at predetermined intervaE time, such, for

instance, as'at the end of eve five minutes. l In the diagrammaticFig.1j8, I 'have shown A aconventional form of circuit closer comprisifing'a wheel 159 arranged to b e gearedwith i the clock train so as tomake a complete revo-` lution once for every hour, said Wheel 159 eachtooth has an insulated portion Whereby the said Wheel is thus arrangedto make and break circuit with the linger 160 twelve times in itsrevolution, so that twelve'im ulses per hour, one for each ive minutes,Will)be transmitted to the time stamp, as will he Well understood. Thesaid electro-magnetic means may comprise an electro-magnet 161 connectedon one side to the finger 160 by a Wire 113, and on the other side byWires 114, 115, with the line wire 101. The contact Wheel 159 is show nas connected by a Wire'116 with the line Wire 100. The electro-magnet161 is Vprovided with an armature 162, the lever of which connects withan operating arm 163 for the time stamp mechanism by means of a link164. The said time stamp 157 is carried by a frame 165, which ispivotally mounted upon a stationary bracket166. An operating arm 167 issecured rigidly to the said bracket, whereby reciprocating movements ofthe said arm vwill cause a rocking of,

the bracket upon its pivotal support.

The bracket and time stamp are arranged contiguou to one edge of therecord sheet, the time stampbeing immediately infront of the face of thesaid sheet and over the platen 151.. The reciprocating operatingmovement just described will then cause the time stamp to be movedtoward and away from the record sheet, and suitable inking mechanismbeing provided, such for instance as an ink ribbon 168 together with theordinary or any suitable form of feeding device therefor, recordimpressions of time will hence be printed upon the said sheet, asappears in iig. 1. The means for actuating the said Y operating arm 167,and which, from the fact that it causes an impression to be recorded orprinted upon the record sheet, may be termed printin mechanism, is alsodesigned to 'be control ed electrically at predetermined intervals oftime, Which intervals may conveniently be the ive minute intervals atwhich the timestamp receives its impulses.` For this purpose, therefore,I have provided a relay including an electro-magnet 169,

which I herein term the printing relay or printing electre-magnet, saidelectro-magnet belng arranged 1n series-with the time lstampelectro-magnet 161, as shown in the diagrammatic Fig. 18,'f theelectro-ma net 'tsef appearing'in detail in Fig. 14. his electro-magnetis rovided Wit an armature 170, connecte by means of a link 171 With arocker arm 172, said rocker arm mounted upon a short shaft 173, theoppo- Y site enFof which carries a pawl 17 4 (see par'- Aer ticularlyFig. 12.) "This pawl is normally in engagement with a notch or tooth ina tumport. This tumbler is overbalanced as toy gravity upon the side ofits pivotal support nearest the pawl, and hence would fall but for thesupport of the pawl.

When the electro-magnet 169 is energized, the pawl will be released fromengagement .with the tu1nbler,'and the tumbler will fall for a distancelimited by the platform 129 or other part of the frame upon which it mayrest. The said tumbler 175 is provided with a laterally extending tooth177, Which is arranged to be normally clear of a connecting rod 178, thelower end of which is free, but the upper end of which is pivotallyconbler 175,'pivoted at 176 to a stationary sup'- i nected to the saidoperating arm 167. The

lower free end of the connectinor rod normally rests against a stop 179.When, hoW- ever, the tumbler 175 falls, owing to its release fromengagement with the pawl 17.4, ,the tooth 177 lfalls against theconnecting rod 178 and pas-ses beneath a shoulder 180 therein finallyengaging said shoulder. In this position the said tooth will lift theconnectingrod when the tumbler is returned to its normal position, thatis to say, the posi- A tion in which it is shown in Fig. 12, from itsvfallen position as above described.-

The lifting of the -connecting rod 178 will effect a movement of theoperating arm 167 to which itsupper end is connected sufficient 'toproduce a printing movement o f the frame 165 and printing Wheelscarried thereby.

The said movement of the tumbler 175 is v effected by means of aneccentric in 181 carried by a disk 182 mounted loose y upon the shaft ofthe motor 57. This disk 182 is normally held against rotation, but, atsuitable intervals, it is caused to make one revo- I lution with theshaft upon which is is mounted, and if,.'at the timel that it makes suchrevolution, the tumbler 175 be tripped, the eccentric stud or pin 181carried thereby will engagea shoulder 183 upon the said tumbler 17 5 tothereby return the said tumbler to its normal position. The operation ofthis disk 182 is controlled by means of a one-revolution clutch .184,itself controlled by a relay- 185 comprising an electro-magnet 186 and'an armature 187. The armature 187 is mounted upon a 'ivoted lever 188,toIthe u per end'of Whic 1 is pivoted a tripper 189. T is tripper, whichis normally pressed upwards by a leaf spring 170, is provided withl ahook-like end adapted to engage a in 191 upon a latch 192. The latch 192orms a normal support for a detent 193, which is pivoted at 194 to astationary sup ort, the Opposite end of which is in' norma engagement'with one end of a pivoted `pawl 195. The said pawl 195 is pivotallymounted upon a disk 196, which is rigidly secured tothe said disk 182 bymeans of studs or bolts 197, and a spring 198 normally tends to pressthe said pawl inward, While its engagement with A dependent from t arm200 being slightly offset soas to be co;

the said detent 193 keeps itforced outward against the resistance ofsaid spring.

The shaft ofthe motor 57 carries a ratchet wheel 199 rigidly securedthereto, the teeth 193, allowing the said detent to become disengagedfrom the pawl`195. This will permit the pawl to be moved inward at theend opposite to the end at which it is normall engaged by the saiddetent 193, so that it wi be engaged by the teeth of the ratchet wheel199. It will be remembered that the motor shaft is running all the time,hence the ratchet wheel 199 will be running, and the disk 196 to whichvthe pawl is pivoted, and hence also the disk 182 connected to the saiddisk] 96, will be carried around with the said motor shaft. ery, whichis ada ted to engage an arm 200 lie said detent-193', the said incidentwith the plane of movement of the said disk 196. Als said. diskrevolves, .therefore, it will engage the said arm 200 and will re-setthe detent 193, returning it to its nor- \mal position, in `whichposition it is shown in the drawings.

A s )ring 201 extends between the latch 192 and t ie detent 193,tendingy to force the two said parts into engagement twith each other,hence, as the detent is re-set against the resistance of the said spring201, thelatch 192 is brought into position to engage same, as will bewell understood. The latchw192 will be free to engage thedetent 193whether the electro-magnet 186 of the relay 185 has been denergized ornot, because the llaterally prolilecting pin 202 u on the said detent tow ich one end of t ee said spring is connected,1s so arranged as tostrike one end of the tripper 189 when the detent drops,

and will thereby free if from engagement with the pin 191, so'that the`tripper is free from engagement with `the pin. 191 immediately it hasdone its work of trip ing the latch 192, l

and will not be permittfe( to again engage the said pin until after thecoils-of the rel'ay 185 have been denergized and again enerorized. There-setting of' the detent 1.93 will bringthe end thereof into the pathof movement of the projecting portion oi the pawl 195,;so. that, atthe-endl of a complete revo-V lution. of the disk 196, the pawl 195 willbe engaged by the detent 193 to first release the pawl' from engagementwith the ratchet wheel 199, and at substantially the same moment to stopfurthermovement of the disks carrying it. A pin 203, carried by a s ringfinger 204, engages an abutment orvtoot 205 The disk 196 has a cam-likeperiph-` the time stamp, ma

'for every impulse given to theprinting upon the disk 196 to prevent anyrearward movement of the same such as might happen from re-action orother causes.

From the foregoing it will be seen, then,vv

that the device just described is a positive one-revolution clutch; thatat every impulse given vto the relay a single com lete revolution-nomore and np less wil be imparted to the disks 196, 182; and that, as themotor is arranged to be runnin at a high rate of speed, such movementvwil be given yruickly, positively and with great precision.

he operation of this one-revolutionclutch effects, yas before stated,the rel-setting of the tunbler 175, if the tumbler has been alreadytripped by the operation of the printing relay, but it has anotherfunction, which -1s tot loperate the counter 156. This is effected bymeans of an operating arm 206, pivoted at 207 to a stationary. support,the eccentric' pin 1'81 upon the disk 182 being received within a slot208 in the said operating arm,

as is fully illustrated in Fig. 12.v The ivot 207 of the operating arm206 is a shorts aft', to the opposite end of which is secured anotherarm 209 connected by means of a connectinv link 21() with an, operatinglever 211 by which the counter is actuated to print.

The counter 156 may be of any suitable A character, and is convenientlyan ordina numbering head provided with Wheels to which step by stepmovements are imparted at every operative movement of the operatinglever 211. The said counter is carried upon the frame 165 with the timestamp 157 and inking mechanism, comprising an ink ribbon 212 and feedingmeans therefor, corresponding to the inking mechanism .168 for beemployed. The numbering wheels of t 1e counter will thus be given animpulse for every revolution of the.

one-revolution clutch, and Ahence for every impulse given to the relay185, but a'record thereof will only be printed when the print-lingrelay169-isoperated.. It may be noted that the printing mechanismis'cperated during 'the rst ortion ofthe movement of theL disk 182 of t eone-revolution clutch, during which time the `pin 181 moves alon theslot 208 without imparting any substantialmovement thereto at all. Inother words, this movement of 'the' ciu-tch. is during slrlastan'`tially lost motion .so-.far as the operation' of `the eountin Wheelsisconcerned. Thus the operation o the" printing, and the; stepgby:

though o together upon the framet 165,1; record from.

1.120 step movement.. of the counting wheelisf' erated by the sameactuating vmeansywll not interfere with each other. The counter and timestamp=- being carried 7| both the time stam and the counter-'will be?simultaneously ma ey upon the record relay'.v

yReferring now' to the diagrammatic Fig. 18, it will be seen that thecoils 1.86 of! the relay 185 are connected on one. side on the otherside with a circuit closing device 213 through a connecting wire 118.The circuit closing device 213 is in turn connected with the linethrough a connecting wire 119, so that the coils 186 of the relay 185are connected and disconnected with the line through the said circuitcloser 213. The circuit closing device 213 is shown diagrammatically ascomprising a rotary member 214, connected to the wire 118, and a brush215 connectedto the wire 119. The said rotary member may be connectedwith any moving part by the revolutions of which it is desire to count.It may be connected with the enOine shaft either directly or indirectlyunit of time may, of course be any throu zh reducing gearing, or it maybe connected to a class of log commonly employed in connection withvessels for measuring distance, known as a patent log. With whatever itis connected, it is designed to make and break a circuit at eriodicalintervals, which may conveniently represent intervals of distance,whereby the counting mechanism may be employed to count units ofdistance. Thus the counter becomes an instrument by which units ofdistance may be recorded, while the time stamp is an instrument b whichunits of time may be recorded. T e units of distance may, of course, beany desired unit, such, for instance, as five miles, or, if the countingdevice be connected with the engine, the unit may represent, say, everfive hundred revolutions of the propeller s aft. Likewise, the

desired interval, a convenient unit, as above stated, being fiveminutes. It may also be noted that, if the counting device be em loyedto register revolutions of the pro el er shaft, and a plurality ofshaftsbe em oyed, a plurality of similar counters may e emplo ed, ifdesired,'onefor each propeller shaft. goth these units of time anddistance are printed along the edge of the record sheet at predeterminedintervals, the position of the said time and distance intervalscorresponding upon the sheet with the direction at that moment beingrecorded by the direction recordin mechanism, by reason of the fact thatt e several recording m'eans are arranged substantially inline with eachother, as WilPreadi'ly a ear from an inspection of the drawings.ransverse lines may conveniently ap ear on the record sheet blank, asshown, to acilitate the correlative reading ofthe different records.

let)

From a consideration of the foregoing, it will then be seen that, withan instrument of this description on ship-board, a complete record ofthe ships actions as to time, distance, s eed and direction will beaccurately recorde for any period. As the machine is designed to berunning at all times regardi l l 1 i with less of whether the ship is inport or at sea, .the line through a connecting wire 117, and

the record will not only show the entire course of the ship during allthe time it is moving and the time spent therein, but will also recordthe time spent at any ports the ship may touch, the time spent with theship at anchor, including the direction in which the ship is lyingeither when at anchor or in port; and the speed of the ship duringl anypart of its journey may be quickly and accurately computed bycalculating the ratio between the distance traveled and the timeconsumed therein. It will also be noted that,

while the speed of the motor will probably he quite regular andreasonably accurate where by the travel of the sheet at all times willhe substantially uniform, such accuracy or uniformity is immaterial tothe accuracy of the record, because the time is calculated and recordedentirely from the time mechanism which is controlled from a clock orother accurate time measuring means.

It is intended that, in practical'use, a certain length of record stripshall be removed from the instrument from time to time and kept on filein the home office, but, when one section of the stri is removed, it isintended that the web shalFbe immediately connected up again, so thatsuccessive stri s will constitute a continuous record. f hus, withtrans-Atlantic liners, the strip may be removed every time the shipreaches a home port and a new strip immediately connected up, theremoved stri s bein taken to the home office, and there ept on le andchecked off as a check upon the master of the vessel; or in vessels thattravel longdistances, or cruise from place to place, a section of th(`chart may be` removed periodically at periodical intervals of time. Sucha provision is convenient in that the charts filed will then be ofuniform length and not too unwieldly in size.

As a special use of the instrument, an ideal or master chart may beprovided from the home office, either made from an ideal previous trip,or mathematically designe( to represent ideal conditions, withinstructions to follow the chart as closely as possible. The chartplotted by the vessel on its trip in the instrument will show howclosely the master has come to these ideal conditions, and unwarranteddeviations therefrom would require an explanation.

In the modified structure illustrated in Figs. 16 and 17 of thedrawings, the terminals, which are shown in the form of circular andsegmental strips 39, 40 and 41, in the three portions 223, 224, 225, theportions 223, 225 arranged to laterally engage the upturned parts 222 ofthe strips. 219, 220, 221,

